Two piece watch-casing



L. LEwm. TWO PIECE WATCH CASING.

APPLICATION FILED MAR. 5, 192].

Patented July 26, 1921.

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ATTORNEY.

UNITED STATES PATENT org es..-

LOUIS LEwITn'oF BROOKLYN, NEW YORK.

To all whom it may concern: a

Be it knownthat I, LoUis Lnw'rrr, a .citizen of the United States, residing" atBrookl n, countyof ;-Kings, and State of New ork have invented certain new and useful Improvements in Two-Piece Watcl'i Casing, fullydeseribed and represented in the following specification and the accompanying drawings, forming a part of the same This invention relates to awatch-casing intended especially for a wrist-watch but adapted for other uses; and the object of the invention is to furnish an inclosure. for

the movement in a very small numberiof pieces, and is to have themovement sosus- .tained within the casing that the crystal shall be upon the casing body instead of upon the cover. I

The cover is thus applied to the rear of the body where the regulator ofthe movement is located, and. the mere opening of the cover thus suflices to expose thee'utire rear portion of the movement, thus enabling it to be inspected or the regulator adju'sted.

The exposure of the works by "tlius opening the rear cover also affords a purchaser an opportunity of inspecting any watch offered to him fo'r purchase, and without removing the works from the casing.

This result is attained by a particular construction, which will be understood by reference to the annexed drawing, in which Figure 1 shows the front of the \vateh-cas ing and its movement; Fig. 2 is an edge view of the same, both provided with loops for a wrist-hand; Fig. 3 shows the interior of the casing-body with the cover turned at right-angles thereto; Fig. 4 is a vertical section of the casing and movement on line 44 in Fig. 1; Fig. 5 is an edge view of the movement detached from the casing; Fig. 6 is an edge view of the locking-ring which embraces and holds the movement in the casing; and Fig. 7 is a side view of the detachable winding-stem. The parts are greatly enlarged in the drawing to show the construction more clearly.

The casing is shown of fanciful octagonal shape, but the shape is especially adapted for manufacture from sheet-metal by draw ing or stamping the parts into the desired form. The construction thus greatly cheapens the cost of the casing while affording the advantages referred to above.

The front a is provided with a crystal 6 TwoP'rEcEwhToH-msm I h Specification of'Letters Iatent. Pat t fl Ti 2 11921 Application. Hedi March 5, 1 21 Serial No, 449352;... 7 {11.

e ath from its margin forming I e cover (2 with one A hinge d connects t ;edge of the body, and has a narrow flange .e at 1t3 S. margln which fits into a rahbet c upon the rear edge of thebody..,.

Loops jare shown upon thebody to celve a wnst strap.

T e vem n'tf 'hss-i ltr i rnl f t margin of which contacts with theinbtior.

of the casing at the junction-of the front a and bodyc, and vthe .body is madeof suit- .able depth to embrace substantiallm all of the movement. I The line, of contact with theginteriorof the casing is. suitably proportioned, te make a seat to which the; front {plate is fitted; the body of the casingbeing a little lar e'rinside than the front plate, as shown in ig, 4,

to permit the easy removal otthebody irom v .the casing when required. i

p The entire marginiof the moveiiieiit nished'with ahead 9 shown in Fim. 5,,and

. a locking-ring 72," has ac lindrieal flange z and-1 upon the when fitted upon the band; the fiat portion extends out to the inside or the casingas is clearly shown in Fig; 4'. The cylindrical portion of the locking-ring is held upon the watch-movement by friction, and'also held by friction within the rear edge of the easin -bodyc. 3 i

The margin of the flange" projects around the movement and is fitted to thelfintire periphery of the body inside its rear'eilge, and necessarily corresponds in shape with the casing, whatever the design may be.

The movement is omitted from the case in Fig. 3 to clearly show the form and location of the locking-ring h.

The casing is made to fit the front plate 7 and margin of the movement loosely, so that when the locking-ring is removed the movement may be readily drawn out of the casing and may thus be instantly removed for examination or repairs, if desired.

A hole is is formed in the side of the body to insert the winding stem Z with the crown Z upon the outside of the body.

With such arrangement. the stem must be a d has affiange L removed when themovement is to be taken from the casing, and is formed with a thread m upon its inner end for that purpose, as shown in Fig. 7.

5 The locking-ring is provided with a notch n in the lower edge of the Ilange'i, to clear the winding-stem, when the locking-ring is fitted within the casing.

It will be observed in Figs. 1 and 2,'that 0 the opening I) for the crystal is in the front of the-body 0, so that the applicationof the cover to the rear of the body exposes the "rear side of the movement when the cover "e is opened. This arrangement affords all the advanta es nientionedabove, of permit ting a purchaser to inspect a watch movement without taking it from the casing, and ermits of its regulation by the mere openmg of the casing which gives full access to o'the regulator.

It will be understood that the casing may bem'adeof any desired shape, providing the opening for the dial is formed in the bodypart of the casing as shown in the drawing,

and such body constructed of suitable depth to embrace the movement, and means providedin the locking-ring h for holding the movement in the body when the cover is opened. 4

Such locking-ring is fitted snugly to both the movement and the body, and thus op- ,erates-tojhold the movement in the body so long as it ,is embraced by the ring.

Itwill be observed that the entire casing 3 is formed of two pieces only, the front combined with the body-portion, and the cover which closes the rear of the case, and both .parts so shaped that they can be formed by stamping from sheet-metal, thus producing "'40 a very ornamental and convenient casing at the lowest possible cost.

To permit such manufacture of the cusing and cover by stamping from flat sheets of metal, they are made without any under cut contour at the margin, but the body projects straight backward from the front a, and the flange e at the margin of the cover is of the same diameter as the body and projects in like manner backward from the plane of the cover so as to fit directly upon the rabbct c on the rear edge of the body.

The exposure of the regulator by opening the rear cover of the casing has often been effected by making the casing of three parts, to the body of which two lids were jointed to cover the front and rear partsof the movement but my invention furnishes a cheap construction for a casing having two parts only. i

The exposure of the regulatorby opening the rear cover is secured in my construction by making the front which carries the crystal with a deep flange or body forming a box suitable to receive the entire movement, in which box the movement is so inserted that the dial is exposed at the front of the casing, and the regulator is exposed merely by opening the rear cover. L

Having thus set forth the nature of the invention what is claimed herein is:

1. A casing for a watch-movement having a front with a crystal therein and a seat upon the inner side for the dial-plate of t'he movement, a body projected straight backward from the front to inclose the movement, :1 cover hinged to the rear of the body, and a locking-ring fitted to therear part of the movement and to the'inner side of the body at its rear edge.

2. A casing for a Watch-movement having a front with a crystal'ther'ein and a body projected straight backward from the front to inclose the movement, -and a'cover hinged to the rear of the body, a band 1-mhracin the margin of the movement. and a locking-ring having a cylindrical flange fitted to the said band, and a flat flange projcctcd from the rear edge of the cylindrical flange to the interior of the body at its rear edge, the locking ring being fitted snugly to the said band and to the interior of the body to hold the movement in place when the rover is open.

in testimony whereof I have hereunto set my hand. 

